(a) What are fuels? Name any two common fuels.
(b) State any four characteristics of an ideal fuel(or good fuel).

(a) A fuel is a very good source of heat. The heat energy produced by burning fuel can be used directly to cook food, for running motor vehicles and factory machines, can be converted into electrical energy at thermal power stations.

Wood and Petrol are examples of two common fuels.

(b) Characteristics of ideal fuel are given below:

• It has a high calorific value.
• It burns easily in the air at a moderate rate.
• It has a proper ignition temperature.
• It does not produce any harmful gases or leaves any residue after burning.

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Updated on: 10-Oct-2022

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